nsMappedAttributes.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * IBM Corporation. * Portions created by the Initial Developer are Copyright (C) 2004 * IBM Corporation. All Rights Reserved. * * Contributor(s): * IBM Corporation * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** *//* * A unique per-element set of attributes that is used as an * nsIStyleRule; used to implement presentational attributes. */#ifndef nsMappedAttributes_h___#define nsMappedAttributes_h___#include "nsAttrAndChildArray.h"#include "nsMappedAttributeElement.h"#include "nsIStyleRule.h"class nsIAtom;
class nsHTMLStyleSheet;
class nsRuleWalker;
class nsMappedAttributes : publicnsIStyleRule
{
public:
nsMappedAttributes(nsHTMLStyleSheet* aSheet,
nsMapRuleToAttributesFunc aMapRuleFunc);
void* operator new(size_t size, PRUint32 aAttrCount = 1) CPP_THROW_NEW;
nsMappedAttributes* Clone(PRBool aWillAddAttr);
NS_DECL_ISUPPORTS
nsresult SetAndTakeAttr(nsIAtom* aAttrName, nsAttrValue& aValue);
const nsAttrValue* GetAttr(nsIAtom* aAttrName) const;
PRUint32 Count() const{
return mAttrCount;
}
PRBool Equals(const nsMappedAttributes* aAttributes) const;
PRUint32 HashValue() const;
void DropStyleSheetReference()
{
mSheet = nsnull;
}
void SetStyleSheet(nsHTMLStyleSheet* aSheet);
nsHTMLStyleSheet* GetStyleSheet()
{
return mSheet;
}
const nsAttrName* NameAt(PRUint32 aPos) const{
NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
return &Attrs()[aPos].mName;
}
const nsAttrValue* AttrAt(PRUint32 aPos) const{
NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
return &Attrs()[aPos].mValue;
}
// Remove the attr at position aPos. The value of the attr is placed in// aValue; any value that was already in aValue is destroyed.void RemoveAttrAt(PRUint32 aPos, nsAttrValue& aValue);
const nsAttrName* GetExistingAttrNameFromQName(const nsACString& aName) const;
PRInt32 IndexOfAttr(nsIAtom* aLocalName, PRInt32 aNamespaceID) const;
// nsIStyleRule
NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
#ifdef DEBUG NS_METHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endifprivate:
nsMappedAttributes(const nsMappedAttributes& aCopy);
~nsMappedAttributes();
struct InternalAttr
{
nsAttrName mName;
nsAttrValue mValue;
};
/** * Due to a compiler bug in VisualAge C++ for AIX, we need to return the * address of the first index into mAttrs here, instead of simply * returning mAttrs itself. * * See Bug 231104 for more information. */const InternalAttr* Attrs() const{
returnreinterpret_cast<const InternalAttr*>(&(mAttrs[0]));
}
InternalAttr* Attrs()
{
returnreinterpret_cast<InternalAttr*>(&(mAttrs[0]));
}
PRUint16 mAttrCount;
#ifdef DEBUG PRUint16 mBufferSize;
#endif nsHTMLStyleSheet* mSheet; //weak
nsMapRuleToAttributesFunc mRuleMapper;
void* mAttrs[1];
};
#endif /* nsMappedAttributes_h___ */